All three traits have been associated with a callous-manipulative interpersonal style. A factor analysis carried out at the Glasgow Caledonian University found that among the big five personality traits, low agreeableness is the strongest correlate of the dark triad.

Do you have a ruthless streak? Psychologists believe the “dark triad” of personality—Machiavellianism, narcissism and psychopathy—might help you succeed in life. To measure your own dark side, click on the link below and choose how much you agree or disagree with 9 simple statements—and we’ll tell you how dastardly you actually are.

The questions for this quiz were inspired by questionnaires developed by Delroy Paulhus and Daniel Jones (Assessment, vol 21, p 28). Our quiz was designed solely for entertainment, and the results should not be considered a scientific measure of your personality. If you would like to learn more about Paulhus’s personality research and his serious explorations of the dark triad, read the BBC profile “The man who studies everyday evil”.